diff -Nuar a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt	2017-12-08 04:04:00.000000000 +0300
+++ b/CMakeLists.txt	2017-12-16 23:46:52.237203968 +0300
@@ -27,7 +27,7 @@
 
 set(KDEPIM_APPS_LIB_VERSION ${PIM_VERSION})
 
-set(QT_REQUIRED_VERSION "5.8.0")
+set(QT_REQUIRED_VERSION "5.7.1")
 
 set(AKONADI_VERSION "5.7.0")
 set(GRANTLEETHEME_LIB_VERSION "5.7.0")
